#screen {
    width: 450px;
    height: 50px;
    margin-top: 10px;
    background-color: #ffffff71;
    font-size: 22px;
    line-height: 50px;
    text-align: center;
}

#chat_area {
    width: 404px;
    height: 400px;
    margin-top: 10px;
    margin-left: 150px;
    border: 2px solid #ffffff70; border-radius: 5px;
    position: relative;
    background-color: #ffffff78;
}

#chat_show {
    width: 400px;
    height: 300px; overflow-y: scroll;
    background-color: rgba(255, 238, 204, 0.56);
    font-size: 22px;
    line-height: 50px;
    text-align: center;
}
#chat_input {
    width: 300px;
    height: 50px;
    margin-top: 30px;
    background-color: #ffffff55;
    font-size: 30px;
    border: 2px solid rgba(255, 238, 204, 0.547)(255, 238, 204, 0.727); border-radius: 5px;
    vertical-align: top;
}
#chat_button {
    width: 90px;
    height: 50px;
    margin-top: 30px;
    background-color: rgba(255, 238, 204, 0.536);
    font-size: 15px;
    border: 2px solid #fec; border-radius: 5px;
    vertical-align: top;
}
#chat_button:hover {
    width: 90px;
    height: 50px;
    margin-top: 30px;
    background-color: rgb(201, 145, 32);
    font-size: 15px;
    border: 2px solid #fec; border-radius: 5px;
    vertical-align: top;
}
#chat_button:active {
    width: 90px;
    height: 50px;
    margin-top: 30px;
    background-color: rgb(149, 127, 83);
    font-size: 15px;
    border: 2px solid #fec; border-radius: 5px;
    vertical-align: top;
}

#self_msg {
    height: auto;
    line-height: 35px;
    font-size: 15px;
    float: right;
    background-color: rgb(7, 190, 102);
    border-radius: 5px;
}
#peer_msg {
    height: auto;
    line-height: 35px;
    font-size: 15px;
    float: left;
    background-color: rgb(93, 218, 243);
    border-radius: 5px;
}

#return_hall{
    position: absolute;
    top:10%;
    left:2%;
    width: 150px;
    height: 50px;
    font-size: 25px;
    background-color: rgba(95, 158, 160, 0.247);
}

#save_data{
    position: absolute;
    top:10%;
    left:14%;
    width: 150px;
    height: 50px;
    font-size: 25px;
    background-color: rgba(95, 158, 160, 0.247);
}

#count_down{
    position: absolute;
    top:10%;
    left:40%;
    font-size: 30px;

}

#user_tip{
    position: absolute;
    top:15%;
    left:64%;
    font-size: 30px;
}